1471029 - High cpu/gpu usage and hangs on page-http://telegra.ph/Telegram-X-03-26 & other pages

Status: NEW

(Core :: Audio/Video: Playback, defect, P3)

Description

[Firefox_Ninja]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180625093249

Steps to reproduce:

http://telegra.ph/Telegram-X-03-26

Open and see the CPU usage



Happens in ESR52/60

Not with EDGE



Actual results:

Comment 1

[Cristian Craciun]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0
Version: 63.0a1

Managed to reproduce this issue on the current release build 61.0 and also on the latest nightly build 63.0a1 (2018-06-27) using macOS 10.14.

Comment 2

[Andrew Overholt [:overholt]]

I profiled this but didn't see anything interesting at all. Off the top of my head, I'm going to guess that maybe something is happening with the animated-gif-like .mp4 files.

Comment 3

[Firefox_Ninja]

(In reply to Andrew Overholt [:overholt] from comment #2)
> I profiled this but didn't see anything interesting at all. Off the top of
> my head, I'm going to guess that maybe something is happening with the
> animated-gif-like .mp4 files.

Any ETA?

why can other browsers work fine ?

And other sites like imgur etc have the same problem too sometimes.

Comment 4

[Liz Henry (:lizzard)]

We could take a patch still in beta 62 if anyone has time to work on this issue. It looks like the team is aware of the issue and triaged it already to P3 so I don't see a need to track it.

Might we also reach out to telegram? It looks to be uncertain if it's really our bug or theirs.

Comment 5

[Liz Henry (:lizzard)]

Andrei, can someone from QA take a look at getting STR for 63 nightly? If we can provide a profile maybe that would be useful.

Comment 6

[Andrew Overholt [:overholt]]

(In reply to Firefox_Ninja from comment #3)
> (In reply to Andrew Overholt [:overholt] from comment #2)
> > I profiled this but didn't see anything interesting at all. Off the top of
> > my head, I'm going to guess that maybe something is happening with the
> > animated-gif-like .mp4 files.
> 
> Any ETA?
> 
> why can other browsers work fine ?
> 
> And other sites like imgur etc have the same problem too sometimes.

Nils is a better person to answer this than I am.

Comment 7

[ovidiu boca[:Ovidiu]]

I tested this issue on Mac OS X 10.14 Beta 4 (18A336e) with FF Nightly 63.0a1 (2018-07-26). Here is a performance profile: https://perfht.ml/2Aba2tz.
The steps that I used are: 

1. Open FF with a new profile
2. Go to the link provided in the description http://telegra.ph/Telegram-X-03-26

I also did a screen recording with the issue: https://streamable.com/0478i

Comment 8

[Nils Ohlmeier [:drno]]

Not a recent regression. Thus I think the priority is right.

jya any immediate idea what could be going on here?

Comment 9

[Pascal Chevrel (relman team) -> :pascalc]

Not a recent regression, several people in the audio/video team are not available in August and the Beta merge is early September so tracking as fix-optional.

Comment 10

[Pascal Chevrel (relman team) -> :pascalc]

Updating tracking flags as we get closer to the 64 release.

Comment 11

[Ryan VanderMeulen [:RyanVM]]

Still reproduces for me on a current Nightly. Can we maybe get someone to take another look at this?

Comment 12

[Alice0775 White]

Attachment: reduced html

many video element with preload="auto" autoplay="autoplay" loop="loop" causes the high cpu problem